Nd2Fe14B中多尺度分形磁畴的探测
Probing fractal magnetic domains on multiple length scales in Nd2Fe14B
摘要：
利用小角中子散射，我们证明了复杂的磁畴图案在Nd2Fe14 B的表面，揭示了定量克尔和法拉第显微镜，传播到散装和表现出的结构特征，尺寸下降到6 nm，畴壁厚度。所观察到的域结构的分形性质提供了一个解释，在体磁化强度的Nd2Fe 14 B以下的自旋重取向转变的异常增加。这些测量为研究高度各向异性磁系统中的分形结构开辟了一个丰富的舞台。
英文摘要：
Using small-angle neutron scattering, we demonstrate that the complex magnetic domain patterns at the surface of Nd2Fe14B, revealed by quantitative Kerr and Faraday microscopy, propagate into the bulk and exhibit structural features with dimensions down to 6 nm, the domain wall thickness. The observed fractal nature of the domain structures provides an explanation for the anomalous increase in the bulk magnetization of Nd2Fe14B below the spin-reorientation transition. These measurements open up a rich playground for studies of fractal structures in highly anisotropic magnetic systems.
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